[INFO] updating cached repository v4run/rust_crash_course
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/v4run/rust_crash_course
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/v4run/rust_crash_course" "work/ex/beta-1.37-6/sources/1.36.0/gh/v4run/rust_crash_course"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/v4run/rust_crash_course'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/v4run/rust_crash_course" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/v4run/rust_crash_course"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/v4run/rust_crash_course'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8c57135ab75114647f9b0c13391e0ac579cd2f7b
[INFO] sha for GitHub repo v4run/rust_crash_course: 8c57135ab75114647f9b0c13391e0ac579cd2f7b
[INFO] validating manifest of v4run/rust_crash_course on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of v4run/rust_crash_course on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing v4run/rust_crash_course
[INFO] finished frobbing v4run/rust_crash_course
[INFO] frobbed toml for v4run/rust_crash_course written to work/ex/beta-1.37-6/sources/1.36.0/gh/v4run/rust_crash_course/Cargo.toml
[INFO] started frobbing v4run/rust_crash_course
[INFO] finished frobbing v4run/rust_crash_course
[INFO] frobbed toml for v4run/rust_crash_course written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/v4run/rust_crash_course/Cargo.toml
[INFO] crate v4run/rust_crash_course already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing v4run/rust_crash_course against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/v4run/rust_crash_course:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 4ecf21534aa342f450aee27097e0c8ea2168ffdd8b5905506a0a5f6d01b1cb10
[INFO] running `"docker" "start" "-a" "4ecf21534aa342f450aee27097e0c8ea2168ffdd8b5905506a0a5f6d01b1cb10"`
[INFO] [stderr]    Compiling rust_crash_course v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "4ecf21534aa342f450aee27097e0c8ea2168ffdd8b5905506a0a5f6d01b1cb10"`
[INFO] running `"docker" "rm" "-f" "4ecf21534aa342f450aee27097e0c8ea2168ffdd8b5905506a0a5f6d01b1cb10"`
[INFO] [stdout] 4ecf21534aa342f450aee27097e0c8ea2168ffdd8b5905506a0a5f6d01b1cb10
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/v4run/rust_crash_course:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 86940a3c252ce7c64dcfc6095d18b84e5bb70bac9785ca200742fc394cb8c5ca
[INFO] running `"docker" "start" "-a" "86940a3c252ce7c64dcfc6095d18b84e5bb70bac9785ca200742fc394cb8c5ca"`
[INFO] [stderr]    Compiling rust_crash_course v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "86940a3c252ce7c64dcfc6095d18b84e5bb70bac9785ca200742fc394cb8c5ca"`
[INFO] running `"docker" "rm" "-f" "86940a3c252ce7c64dcfc6095d18b84e5bb70bac9785ca200742fc394cb8c5ca"`
[INFO] [stdout] 86940a3c252ce7c64dcfc6095d18b84e5bb70bac9785ca200742fc394cb8c5ca
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/v4run/rust_crash_course:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] b0bcaa7650ca5a96d4c427fc2e1cbcdb344833fbbf5a65841988f36f6bb5cfb6
[INFO] running `"docker" "start" "-a" "b0bcaa7650ca5a96d4c427fc2e1cbcdb344833fbbf5a65841988f36f6bb5cfb6"`
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_crash_course-a61b96f285cf4521
[INFO] running `"docker" "inspect" "b0bcaa7650ca5a96d4c427fc2e1cbcdb344833fbbf5a65841988f36f6bb5cfb6"`
[INFO] running `"docker" "rm" "-f" "b0bcaa7650ca5a96d4c427fc2e1cbcdb344833fbbf5a65841988f36f6bb5cfb6"`
[INFO] [stdout] b0bcaa7650ca5a96d4c427fc2e1cbcdb344833fbbf5a65841988f36f6bb5cfb6